Keeping on top of varroa

[pargyle]

I was going to make one of the gasvap devices myself, plenty old copper laying about and wont cost me £35 (hardly breaking the bank, I know).

My only reservation is that having a blow torch heat the burn chamber does not appear to show any ability to regulate temperature. The sublimation of the OA takes place at 188c, after which you can create formic acid and carbon monoxide, not something you want on your bees or in your hive I assume.

It does look convenient but I'm going to do more research to check that it's safe first.

The torch does not need to be at full chat .. the chamber doesn't get hot enough for long enough for the secondary formation .. The OA sublimates very quickly and is ejected in a stream of fine particulates .. there's no real pressure... in order to get the Formic chains established you really need a longer, higher temperature heating and ideally a pressure vessel.

Your only worries using OA by sublimating is that it is not currently a treatment that is VMD approved and your personal safety.

 

[Beefriendly]

The torch does not need to be at full chat .. the chamber doesn't get hot enough for long enough for the secondary formation .. The OA sublimates very quickly and is ejected in a stream of fine particulates .. there's no real pressure... .

You now treat for varroa?

 

[maz0]

The torch does not need to be at full chat .. the chamber doesn't get hot enough for long enough for the secondary formation .. The OA sublimates very quickly and is ejected in a stream of fine particulates .. there's no real pressure... in order to get the Formic chains established you really need a longer, higher temperature heating and ideally a pressure vessel.

Your only worries using OA by sublimating is that it is not currently a treatment that is VMD approved and your personal safety.

Thanks, that's certainly put me at ease regarding it...off to the copper scrap pile I go!

 

[pargyle]

You now treat for varroa?

Save your flies for the Thymallus Thymallus .... this one is not rising to the bait.

 

[mbc]

Save your flies for the Thymallus Thymallus .... this one is not rising to the bait.